Finding the Fourth Proportional to 3,347.43, 5,019.21 and 1,155.57

Step by Step Solution

1. Step 1: Write the proportion equation
   3,347.43 : 5,019.21 = 1,155.57 : x
2. Step 2: Convert to fraction form
   3,347.43/5,019.21 = 1,155.57/x
3. Step 3: Cross multiply
   3,347.43x = 5,019.21 × 1,155.57
4. Step 4: Simplify right side
   3,347.43x = 5,800,048.50
5. Step 5: Solve for x
   x = 5,800,048.50/3,347.43
6. Step 6: Final answer
   x = 1,732.69